iTunes 6 worked and sounded GREAT on my PC with its integrated VIA audio. The digital out connected to my home theater had very good quality, it sounded every bit as good as Winamp. I was happy.
...was...
iTunes 7, however, is T3H SUXX0R. Holy crap does iTunes 7 sound bad. I'm not just talking about poor quality, I'm talking about "static" and "pops" and whacked out distortion. Something is totally FUBAR in iTunes 7 and/or Quicktime. It's a shame too, because I rather like the way iTunes 7 looks and I was interested in browsing some of the new store features. But I went back to 6.0.5 after this crapfest.
If you are interested in iTunes 7, do yourself a favor and wait for 7.0.1 at the very least!!!